The BBC announced today that Maisie Williams will set foot on the “Doctor Who” TARDIS to take up a guest role in the hit show that returns to UK screens this autumn. Williams plays Arya Star in the hit HBO fantasy drama series Game Of Thrones.

On her first day on set, Maisie Williams said: “I’m so excited to be working on ‘Doctor Who’ as it’s such a big and important part of British Culture. I can’t wait to meet the cast and crew and start filming, especially as we’ll be shooting not too far from my home town.”

Steven Moffat, lead writer and Executive Producer said: "We’re thrilled to have Maisie Williams joining us on Doctor Who." He added: “It’s not possible to say too much about who or what she’s playing, but she is going to challenge the Doctor in very unexpected ways."

The show continues filming with two period adventures - The Girl Who Died written by Jamie Mathieson and Steven Moffat, and The Woman Who Lived by Catherine Tregenna.